Home / 305,528.90-421,634.43-169,571.61

Finding the Fourth Proportional to 305,528.90, 421,634.43 and 169,571.61

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Solution

The fourth proportional to 305,528.90, 421,634.43 and 169,571.61 is: 234,011.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,528.90 : 421,634.43 = 169,571.61 : x
  2. Step 2: Convert to fraction form
    305,528.90/421,634.43 = 169,571.61/x
  3. Step 3: Cross multiply
    305,528.90x = 421,634.43 × 169,571.61
  4. Step 4: Simplify right side
    305,528.90x = 71,497,229,126.53
  5. Step 5: Solve for x
    x = 71,497,229,126.53/305,528.90
  6. Step 6: Final answer
    x = 234,011.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.